| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 13 |
0.7%
|
| 2 | Weekly | 21 |
1.1%
|
| 3 | Monthly | 27 |
1.4%
|
| 4 | Less than monthly | 304 |
15.5%
|
| 5 | Never | 1599 |
81.4%
|
| Sysmiss | 2508 |